Featured Research

from universities, journals, and other organizations

Biodiesel algae: Starvation diets damage health

Date:
March 11, 2013
Source:
University of Sheffield
Summary:
New research shows that the commonly accepted method of depriving algae of key nutrients such as nitrogen in order to boost its oil content may be detrimental to overall oil yield in the long term.

It may be better to tolerate lower oil content in algae grown for biodiesel to boost growth and overall productivity, says research from the University of Sheffield.

Related Articles


The research shows that the commonly accepted method of depriving algae of key nutrients such as nitrogen in order to boost its oil content may be detrimental to overall oil yield in the long term.

"Total oil production depends not just on the oil content of the algal cells but how quickly the cells grow and multiply," says Dr Stephen Wilkinson of the University's Department of Chemical and Biological Engineering. "We found you get more oil production overall if you give the algae all nutrients they need to grow fast rather than trying to increase the oil in each cell by limiting the availability of nitrogen."

In a study funded by the Carbon Trust and US consulting engineering firm MWH Global, Dr Wilkinson, along with colleagues from the University of Manchester, examined a species of algae called Dunaliella salina at different cell densities grown at a range of temperatures to determine the rate of growth and lipid production.

Some samples were deprived of nitrogen, whilst others were allowed to grow naturally. During the course of the 4-week study the overall yield from the nitrogen starved crops was in fact lower than many of the crops that had been allowed to grow naturally.

Another key finding of the study was that productivity could also be increased by increasing cell density. The researchers used centrifugation to create more crowded algal cultures and were surprised to see that this these samples could still grow very well.

"Large-scale production of algal biofuels will need big ponds taking up a lot of space," says Dr Wilkinson, "so anything we can do to squeeze more oil out of a smaller land area is very important."

The study is published in the Journal of Chemical Technology and Biotechnology.


Story Source:

The above story is based on materials provided by University of Sheffield. Note: Materials may be edited for content and length.


Journal Reference:

  1. Junying Liu, Joy Mukherjee, Jeremy J. Hawkes, Stephen J. Wilkinson. Optimization of lipid production for algal biodiesel in nitrogen stressed cells ofDunaliella salinausing FTIR analysis. Journal of Chemical Technology & Biotechnology, 2013; DOI: 10.1002/jctb.4027

Cite This Page:

University of Sheffield. "Biodiesel algae: Starvation diets damage health." ScienceDaily. ScienceDaily, 11 March 2013. <www.sciencedaily.com/releases/2013/03/130311124159.htm>.
University of Sheffield. (2013, March 11). Biodiesel algae: Starvation diets damage health. ScienceDaily. Retrieved November 23, 2014 from www.sciencedaily.com/releases/2013/03/130311124159.htm
University of Sheffield. "Biodiesel algae: Starvation diets damage health." ScienceDaily. www.sciencedaily.com/releases/2013/03/130311124159.htm (accessed November 23, 2014).

Share This


More From ScienceDaily



More Earth & Climate News

Sunday, November 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Anglerfish Rarely Seen In Its Habitat Will Haunt You

Anglerfish Rarely Seen In Its Habitat Will Haunt You

Newsy (Nov. 22, 2014) For the first time Monterey Bay Aquarium recorded a video of the elusive, creepy and rarely seen anglerfish. Video provided by Newsy
Powered by NewsLook.com
Raw: Buffalo Residents Digging Out, Helping out

Raw: Buffalo Residents Digging Out, Helping out

AP (Nov. 22, 2014) Hundreds of volunteers joined a 'shovel brigade' in Buffalo, New York on Saturday, as the city was living up to its nickname, "The City of Good Neighbors." Video provided by AP
Powered by NewsLook.com
Toyota's Hydrogen Fuel-Cell Green Car Soon Available in the US

Toyota's Hydrogen Fuel-Cell Green Car Soon Available in the US

AFP (Nov. 21, 2014) Toyota presented its hydrogen fuel-cell compact car called "Mirai" to US consumers at the Los Angeles auto show. The car should go on sale in 2015 for around $60.000. It combines stored hydrogen with oxygen to generate its own power. Duration: 01:18 Video provided by AFP
Powered by NewsLook.com
Google Announces Improvements To Balloon-Borne Wi-Fi Project

Google Announces Improvements To Balloon-Borne Wi-Fi Project

Newsy (Nov. 21, 2014) In a blog post, Google said its balloons have traveled 3 million kilometers since the start of Project Loon. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins